Aubameyang put pen to paper on a new deal this week, committing his long-term future to the club, and helped Arsenal get off to a winning start to the new Premier League season by getting on the scoresheet in a 3-0 win over Fulham.
Willian, who joined Arsenal on a free transfer from Chelsea, had a hand in every goal as the Gunners ran riot at Craven Cottage and showed he could be a vital player this season as Arsenal bid for a top-four finish.
His signing raised the question over whether he would be the man tasked with taking penalties this season, after proving himself capable in that role at Stamford Bridge.
But Arteta insisted that Aubameyang would be the man to step up to the spot, should Arsenal win a penalty against West Ham this weekend.
‘Yes, Auba will start taking the penalties,’ Arteta confirmed.
The Arsenal boss was delighted to see his star striker commit his long-term future to the Emirates.
He added: ‘Obviously I knew what was coming so I was bit more relaxed, but I am really pleased to have convinced Auba to stay at our club as well in the terms that we have done, and with the passion and determination that him and the people around him showed to stay at our club, how happy they are with what we have achieved and as well really pleased to see the reaction of everyone, firstly here at Colney at our club and as well our fans, to keep him.
‘It is enjoy able to work with him, I think we have a really transparent relationship.
‘I think the big reason Auba is staying is because we have an incredible football team, football club, we have some fantastic people working here and because he feels how much love he has from the fans.
‘I played my part, which is part of my job, to try to explain to him what we are trying to do and how important he would be while we are building and that is it.
‘The club has to take credit for that and the people who have been able to put a project and a package to him to stay at the club.’